Forensics, how does it work?

Crime scene, DNA, ballistics, the role and excesses of files

Le Monde : 10.01.2010

Forensic investigators are the new heroes of American series – Les Experts – and French series – RIS Police scientifique.

Since 2003, forensic scientists have been using a new molecule that reacts to iron ions in the blood, Bluestar luminol, which is active in the dark

Every week a DNA analysis makes the headlines, as we saw this autumn with the traces found on the envelope of the Grégory case’s corbel, then during the escape of Jean-Pierre Treiber… But how does the real French scientific policy work? To find out, I went into the laboratories of Marseille and Lyon, interviewed investigators, met researchers who are passionate about police investigation work and are bound by their professional code of ethics – and noted the growing, and worrying, importance of DNA files in solving criminal investigations

REPORTAGE (published in part in Le Monde Magazine, January 2010)

1- WHERE WE ATTEND THE MORNING TOUR OF THE FORENSIC LABORATORY OF MARSEILLE

We have hair traces in 4522, the case of the robbery with kidnapping of elderly people. Hair was found on the adhesives that bound them.

Coffee in hand, the head of the “Biology” section opens the discussion in a small, low room. The eight heads of department of the Marseille forensic laboratory, engineers and former doctoral students, dressed very casually, meet for the morning’s overview – the “demand review”. Philippe Shaad, the director, the only one wearing a tie, looks stern and says: “We have to try to prioritise. “

That morning, 16 files and 58 coded and numbered seals arrived for biology alone, transmitted by police services in a hurry. Most of them are from robberies and burglaries. There are several DNA samples from ‘individuals’ (the police always say ‘individual’), bloodstains and a swab from a telephone cable.

-The other emergency is 4777, the homicide with a presumption of rape,” continued the Biology Officer. We have 21 stab wounds, blood. The body has been moved, we should see if we can find any plants. He was outside for a long time, and as it has rained a lot, I’m afraid that the DNA won’t tell us anything. We should do some more tests, and concentrate on the car, seal it up… maybe we’ll find some usable traces.

-Well, I’ll call the Commissioner,” says the director. He’s feeling the pressure. Speeding up the result is his job – “I have to streamline” he says.

INPS Marseille handles 500 cases per month, thousands of seals

Since the Sarkozy law of 2003 on “Internal Security” and the methodical collection of DNA by the police, requests to the forensic police have soared. “We are moving from the craft to the industry,” explains Philippe Shaad.

The floor is given to the “Fire-explosions”. Big suspense. Because that morning, a heavy gun battle once again made the headlines in Marseille. Machine-gunned in front of the Velodrome stadium” headlines La Provence. What happened?

At around midday, two individuals wearing black helmets fired automatic pistols and Kalashnikovs at a man who was leaving a gym. Ten bullets, head and chest. The man, a former released bank robber, was suspected of having shot a known gangster in September 2007. Revenge, no doubt. Before fleeing, the two assailants set fire to their car. The men of the “fire and explosion” unit are trying to identify the explosive used. If it was a grenade, they will be able to cross-check. If it was a Molotov cocktail, they will analyse the fuses and the petrol.

Why did the killers set the car on fire? To remove traces of DNA. It’s become commonplace,” a sergeant explained. Banditry, large and small, as Vidocq well recounted in his memoirs (1828), has always adapted to advances in police expertise. Today, to eliminate DNA, they “blow up the stuff” as Chéri Bibi used to say.

Now it is the turn of “ballistics” to intervene. The technicians analyse the cartridge cases discovered after the Vélodrome shooting. Each weapon has a “fingerprint”. In Marseille, the police are used to the use of Kalashnikovs by the milieu. Since the fall of the Berlin Wall, it has become the favourite weapon of the small-time crooks of the French Riviera.

New case of the day, toxicology expert causes a stir:

We have a drug rape, with blood on cotton wool. The sample is insufficient. It is not suitable for our analysis.

Director’s ticking. Slowdown in sight. What’s the difference between “narcotics” and “tox” experts? The former deal with seizures of hard drugs that have not been consumed – the port of Marseille was the port of the “French connection” – but also with hashish from Morocco, sold by the small-time kings of the cities – at war with each other. They try to identify the drugs, the cut products, and then compare them with the substances seized in several cases to trace the networks.

The “tox” people confuse drunk drivers, stoned people responsible for an accident, or process substances found in dead people: carbon monoxide, drugs, chemicals, etc. They do forensic work. They do forensic work. What else did the ‘tox’ do on 25 September 2009? Three roadside alcohol tests. The usual.

2- WHERE WE LEARN THAT FORENSIC SCIENTISTS ARE NOT POLICEMEN AND DISCOVER THE HISTORY OF "CRIMINALISTICS

In France, police experts are not multi-skilled super-cops capable of detecting a micro-trace of blood, conducting a profiling interview of a serial killer and then drawing their weapon faster than Agent Catherine Willows in “CSI Las Vegas”. In fact, the jobs of police investigation, evidence collection and forensics remain separate – unlike in the series “RIS. Police Scientifique”.

When a crime occurs and the investigation begins, the forensic identification officers, the “ijists”, “freeze” the “crime scene” on the spot. Trained for this, gloved, masked, protected, they put up barriers, make sure that no one, journalist or neighbour, comes to pollute the place by spitting or with their shoes. Then they take photographs, make sketches, record clues and DNA samples, which are then placed under seal by the judicial police officer. The investigators then call in the services of the forensic laboratories.

In France, three-quarters of the ‘experts’ are not police officers, but former doctoral students from science faculties, engineers and technicians working for the magistrates and the judicial police. These researchers are also civil servants of a public establishment, the Institut National de la Police Scientifique (INPS), which groups together all the technical and scientific police services: biology, ballistics, trace documents, fingerprints, fire-explosions, physical chemistry, narcotics, toxicology, technological traces, all the ‘forensics’.

French forensic science has a long history. Some historians trace it back to the investigation of the “poisoners of Versailles”, conducted by La Reynie under Louis XIV. But the pioneer was Edmond Locard, Alphonse Bertillon’s colleague, who founded the first technical police laboratory in Lyon in 1910…

We are in the Third Republic, Jules Ferry is educating the countryside, and a republican and positivist impulse wants to make us forget the brutal practices and the political filing of the Second Empire police. Edmond Locard wanted to replace the traditional police search for witnesses – unreliable – with the methodical search for convincing evidence – the constitution of proof – and the obtaining of confessions – “the queen of proofs” often obtained by sequestration and beating (formerly by the dreadful questioning or torture) – and sometimes retracted.

With anthropometry, dactyloscopy (fingerprint analysis) and the search for clues, Edmond Locard set the roadmap for a more objective police force: “No individual can stay in a place without leaving the mark of his passage,” he wrote, “especially when he has had to act with the intensity that criminal action requires…”.

Modern French forensic science was really developed at the initiative of the socialist Pierre Joxe, following a distressing report on the state of the premises and equipment of the technical police

In 1985, he allocated significant funds to them, hired scientists and engineers, and brought together all the laboratories and archive and documentation services. This reunification continued under the Jospin government with the authorisation of DNA sampling and the creation of the National Automated DNA Database (Fnaeg, initially intended for sexual offences and later for organised crime and terrorist cases) and the law of 15 November 2001 on “Daily Security” (LSQ), adopted two months after 11 September.

This law will be said to be liberticidal by human rights associations for having liberated telephone tapping and punished by prison the refusal to take a DNA sample. It founded the Institut National de la Police Scientifique or INPS, a public institution under the supervision of the Ministry of the Interior.

In the opinion of the director of the Marseille laboratory, the separation of police and scientific analysis tasks through the INPS is very important: it preserves the independence of the expertise from police or judicial pressure. The separation of the professions is appropriate because it enriches the investigation. Generally, we hardly know the case we are dealing with. We are objective and neutral. These different views on the same investigation avoid false leads and enrich the investigation. Sometimes, they nuance or counteract the overly fixed “intimate conviction” of a judge or a police officer in a hurry.

In 2004-2005, the appalling miscarriage of justice in Outreau left its mark on the judicial and police apparatus.

Magistrates and lawyers reproached the young judge Burgaud for his fixed ideas, his summoning of children to the police station, his contempt for the defence. The psychological experts, in this case judicial, have accumulated errors of interpretation. The expertise, often called “scientific”, has been discredited. In fact, the expression “scientific police” can be worrying. It seems to imply that this police force is never wrong. That they are armed with an exact science that is always conclusive. That an expert, a psychological or genetic profiler, always tells the truth. But we know that the police arrest one-day suspects, that “false guilt” appears. That “irrefutable” evidence is difficult to establish.
 
The police and the judiciary have to build up a ‘body of evidence’ to convince themselves of the guilt of an ‘individual’, and experts provide them with ‘investigative evidence’. Sometimes they are wrong. Alphonse Bertillon, the father of anthropometry, gave a graphological expertise of the famous “bordereau” of the German embassy which accused the unfortunate Captain Dreyfus – but he had not written it. In other words, an expert opinion does not establish guilt for sure.

What does the director of the Marseille forensic laboratories think?

We never make a judgment of guilt. We answer a question asked by the investigator or magistrate. What make of car is this paint chip found in the wound of an accident victim? Was this shell casing fired from this weapon? Did this person die by drowning? We can go back to an investigator to discuss how he or she collected evidence, or ask to expand the search. The fact that we are not on either side of the fence, neither police nor judge, guarantees our independence. This is well noted on the journalists’ handbook.

3 - WHERE WE DISCOVER THE EXISTENCE OF "FALSE POSITIVES" AND THE RISKS OF "ALL DNA".

Since 2003, forensic scientists have been using a new molecule that reacts to iron ions in blood, Bluestar luminol, which is active in the dark. Whether the soil has been washed away or the blood diluted a thousand times, there are always a few metal ions left at a “crime scene” – and luminol reveals this by chemiluminescence. Blood traces provide DNA, their projections give ‘morphoanalysts’ clues as to how a blow was struck, how the blood flowed or gushed out.

Many criminal cases have been solved with luminol, such as the sudden disappearance of the Flactif family and their three children in April 2003. But while luminol is an effective detection product, beware of misinterpretation. It also reacts to copper, blood in urine, faeces and sodium in bleach: it could, for example, indicate a walker who has relieved himself in the wrong place. This has happened. All the experts in Marseilles say it: technology is useful for an investigation, it does not give the truth.

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Flactif, The cursed cottage is for sale

The parents of Xavier Flactif, massacred with his family in April 2003, have returned to the scene of the tragedy. The chalet of Grand-Bornand, in Haute-Savoie, is put on sale.

Le Journal du Dimanche : 08.03.2009

Inside, nothing or almost nothing has changed for six years. The seals of the gendarmes are still installed. An unbearable visit in the form of a final tribute.

The parents of Xavier Flactif, massacred with his family in April 2003, returned to the scene of the tragedy. The chalet of Grand-Bornand, in Haute-Savoie, is put on sale. Inside, nothing or almost nothing has changed for six years. The seals of the gendarmes are still in place. An unbearable visit in the form of a final tribute.

“The outlines of blood traces, invisible to the naked eye. They had been carefully bleached by the assassin after the quintuple homicide, but were then revealed by the “Bluestar”; this product sprayed by the experts of the Gendarmerie Nationale’s criminal research institute (IRCGN) which makes all the hemoglobin stains reappear in the half-light, even if they were meticulously wiped off. “

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The secrets of real experts (LE FIGARO)

Philippe Esperança, morpho-analyst: Blood on the trail

By Le Figaro, 21/07/2006.

“Espé” is the French specialist in the revelation and analysis of bloodstains. At the Institut de recherche criminelle de la gendarmerie nationale (IRCGN) in Rosny-sous-Bois, where he is assigned to the ATO department (anthropology, thanatology, odontology), Chief Philippe Esperança, 38, is the expert who discovered the terrible truth inside the chalet in Grand-Bornand (Haute-Savoie) after the massacre, in April 2003, of the five members of the Flactif family (Xavier, a 41-year-old property developer, his partner Graziella Ortolano, 36, and their three children, aged between 6 and 10). David Hotyat was sentenced on 30 June by the Haute-Savoie Assize Court to life imprisonment, with a security sentence of 22 years (David Hotyat has appealed this sentence).

Philippe Esperança, who was called to the stand to comment on his expert reports, told the court how the first IRCGN experts, who arrived at the chalet after the Flactif family’s unexplained disappearance, had called him because they suspected that “the place had been cleaned”.

When I arrived,” he said, “the chalet was perfectly tidy and clean. After my colleagues had made all the other findings (fingerprints, footprints, particle samples), we used the BlueStar. In a darkened room, this luminescent product turns blood traces blue, even if they have been carefully washed.

It didn't take me long," says Philippe Esperança, "to be sure that the small living room of the chalet had been cleaned. Thanks to the product we had sprayed, I could clearly see the traces of blood left on the floor by a sponge about fifteen centimetres wide."

Philippe Esperança, who was called to the stand to comment on his expert reports, told the court how the first IRCGN experts, who arrived at the chalet after the unexplained disappearance of the Flactif family, had called him because they suspected that “the place had been cleaned”.

When I arrived,” he said, “the chalet was perfectly tidy and clean. After my colleagues had made all the other findings (fingerprints, footprints, particle samples), we used BlueStar. In a dark room, this luminescent product turns blood traces blue, even if they have been carefully washed.

A few weeks later, at the request of the magistrate appointed to investigate the case, Chief Esperança returned to the chalet in Grand-Bornand. His mission: to reveal the traces in all the rooms and to proceed with their morphological analysis. On the second floor of the house, called ‘le gîte’,” explains the gendarme, “I found traces of blood from a person who had been hit at a height of less than a metre. DNA analysis showed that it was Mrs Ortolano. On the floor, the BlueStar showed extensive cleaning of the landing and a blood trail from the landing to the laundry room. On the staircase leading to the third level, after the product was used, you could clearly see the handling and dumping of bodies there given the very large amount of blood that had been spilled here.”

“On level three,” he continued, “we discovered several cleaning sites in the small living room, the kitchen and the large room, as well as acts of violence committed, for the first one, in the small living room with a firearm and which the DNA will say was Xavier Flactif. In the kitchen and its vicinity, we found evidence of violence committed by a blow (a first area of blood revealed between the kitchen table and the wall, and another between the kitchen table and the hall table). These two areas of blood matched the DNA of one of the couple’s two daughters.”

On the top floor of the cottage, the bedrooms: “There were, in the bedroom of Sarah, one of the Flactif’s daughters, traces – cleaned and revealed by the BlueStar – of blood spatter on the walls indicating that a blow had been delivered always at a height of less than a metre. The DNA was that of one of the two girls.

During the trial of the perpetrators and accomplices of this carnage, Philippe Esperança was questioned at length by the president of the assizes on the version of the facts given by David Hotyat, who explained that two mysterious individuals had hit him inside the chalet and that he had fainted.

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The Flactif case: With Philippe Esperança

BLUESTAR® FORENSIC helped solve the Grand-Bornand quintuple murder case

The Flactif family had mysteriously disappeared from their chalet.  The programmes “Faites entrer l’accusé” and “Secrets d’actualité”, as well as a press review on the progress of the investigation, came back on this story that has shaken France. You can also read the interview of the morpho-analyst “Philippe Esperança” conducted by the Figaro Magazine who carried out the expertise of the blood traces at the Flactif’s chalet.

Science investigation: the secrets of the real experts

Philippe Esperança, morpho-analyst. Blood on the trail "Espé" is the French specialist in the revelation and analysis of bloodstains. At the Criminal Research Institute of the Gendarmerie Nationale

Philippe Esperança, morpho-analyst: Blood on the trail, “Espé” is the French specialist in the revelation and analysis of bloodstains. At the Institut de recherche criminelle de la gendarmerie nationale (IRCGN) in Rosny-sous-Bois, where he is assigned to the ATO department (anthropology, thanatology, odontology)…

Chief Philippe Esperança, 38, is the expert who discovered the terrible truth inside the chalet in Grand-Bornand (Haute-Savoie) after the massacre in April 2003 of the five members of the Flactif family (Xavier, a 41-year-old property developer, his partner Graziella Ortolano, 36, and their three children, aged between 6 and 10). A case for which David Hotyat was sentenced on 30 June last by the Haute-Savoie Assize Court to life imprisonment, with a security sentence of 22 years (David Hotyat has appealed this sentence).


Philippe Esperança, who was called to the stand to comment on his expert reports, told the court how the first experts from the IRCGN, who arrived at the chalet after the Flactif family’s unexplained disappearance, had called him because they suspected that “a clean-up operation had been carried out”.

When I arrived,” he said, “the chalet was perfectly tidy and clean. After my colleagues had made all the other findings (fingerprints, footprints, particle samples), we used the BlueStar. In a darkened room, this luminescent product turns blood traces blue, even if they have been carefully washed.

It didn’t take me long,” Philippe Esperança continues, “to be sure that the small living room in the chalet had been cleaned. Thanks to the product we had sprayed, I could clearly see the traces of blood left on the floor by a sponge about fifteen centimetres wide.”

A few weeks later, at the request of the magistrate appointed to investigate the case, Chief Esperança returned to the chalet in Grand-Bornand. His mission: to reveal the traces in all the rooms and to proceed with their morphological analysis. On the second floor of the house, called ‘le gîte’,” explains the gendarme, “I found traces of blood from a person who had been hit at a height of less than a metre. DNA analysis showed that it was Mrs Ortolano. On the floor, the Blue Star showed extensive cleaning of the landing and a blood trail from the landing to the laundry room. On the staircase leading to the third level, after the product was used, it was clear that there was handling and dumping of bodies there given the very large amount of blood that had been spilled here.”

“On level three,” he continued, “we discovered several cleaning sites in the small living room, the kitchen and the large room, as well as acts of violence committed, for the first one, in the small living room with a firearm and which the DNA will say was Xavier Flactif. In the kitchen and its vicinity, we found evidence of violence committed by a blow (a first area of blood revealed between the kitchen table and the wall, and another between the kitchen table and the hall table). These two areas of blood matched the DNA of one of the couple’s two daughters.”

On the top floor of the cottage, the bedrooms: “There were, in the bedroom of Sarah, one of the Flactif’s daughters, traces – cleaned and revealed by the BlueStar – of blood spatter on the walls indicating that a blow had been delivered always at a height of less than a metre. The DNA was that of one of the two girls.”


Extract from the programme “Secrets d’actualité”

Extract from the programme “Faites entrer l’accusé” (14.10.08 / France 2)

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